Cholera Toxin Toxicity Does Not Require Functional Arf6- and Dynamin-dependent Endocytic Pathways
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منابع مشابه
Cholera Toxin Toxicity Does Not Require Functional Arf6- and Dynamin-dependent Endocytic Pathways□D □V
Cholera toxin (CT) and related AB5 toxins bind to glycolipids at the plasma membrane and are then transported in a retrograde manner, first to the Golgi and then to the endoplasmic reticulum (ER). In the ER, the catalytic subunit of CT is translocated into the cytosol, resulting in toxicity. Using fluorescence microscopy, we found that CT is internalized by multiple endocytic pathways. Inhibiti...
متن کاملCholera toxin toxicity does not require functional Arf6- and dynamin-dependent endocytic pathways.
Cholera toxin (CT) and related AB(5) toxins bind to glycolipids at the plasma membrane and are then transported in a retrograde manner, first to the Golgi and then to the endoplasmic reticulum (ER). In the ER, the catalytic subunit of CT is translocated into the cytosol, resulting in toxicity. Using fluorescence microscopy, we found that CT is internalized by multiple endocytic pathways. Inhibi...
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We have developed a primary cell culture system derived from embryonic and larval stages of Drosophila. This allows for high-resolution imaging and genetic analyses of endocytic processes. Here, we have investigated endocytic pathways of three types of molecules: an endogenous receptor that binds anionic ligands (ALs), glycosylphosphatidylinositol (GPI)-anchored protein (GPI-AP), and markers of...
متن کاملInternalization of cholera toxin by different endocytic mechanisms.
The mechanism of cholera toxin (CT) internalization has been investigated using Caco-2 cells transfected with caveolin to induce formation of caveolae, HeLa cells with inducible synthesis of mutant dynamin (K44A) and BHK cells in which antisense mRNA to clathrin heavy chain can be induced. Here we show that endocytosis and the ability of CT to increase the level of cAMP were unaltered in caveol...
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Internalization and traffic to acidic endosomes of anthrax lethal factor (LF) and protective antigen (PA), bound to the anthrax toxin receptor (ATR), is required for LF translocation into the cytosol, where it can elicit its toxic effects. Dynamin is required for clathrin-mediated endocytosis, and long-term disruption of dynamin function blocks internalization of PA. We have used LFn-DTA, a sur...
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ژورنال
عنوان ژورنال: Molecular Biology of the Cell
سال: 2004
ISSN: 1059-1524,1939-4586
DOI: 10.1091/mbc.e04-04-0283